Protectowire 2000 FireSystem, Руководство по эксплуатации и техническому обслуживанию

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Option “T” - Class A Alarm Notification Appliance Circuit Adapter
DESCRIPTION:
The AM-91 Alarm Notification Appliance Circuit Adapter Module converts the two Class B system Alarm Notification Appliance
Circuits of the Main Board MB-91 to Class A type circuits. This provides 4 wire alarm notification appliance circuits in lieu of the
standard 2 wire circuits.
OPERATION:
The two wire Class B circuits are wired into the module input terminals. The AM-91 then conditions and converts the circuits to
four wire Class A alarm notification appliance circuits. This alarm notification control appliance circuit is fully supervised with a
reverse polarity current flow. A short or open in the field wiring is detected by the system controls. Once an alarm is initiated the
circuit immediately reverses polarity and 24V FWR power is supplied to the alarm notification appliances. If a single break occurs
in the circuit all devices will still be supplied power in an alarm state due to the nature of a Class A wiring configuration.
AM-91 Class A Alarm Notification Appliance
Circuit Adapter Module
Output wiring
Input wiring
Standard Class B Alarm Notification
Appliance Circuits - For reference only
Note: Polarity of Notification
Appliance Circuits shown in
Standby Condition.
Voltage 24 V Full wave rectified (FWR) with battery standby
Current 2 amps per circuit 3 amps maximum combined
Maximum (2) conductor copper feed cable resistance may not exceed 1 ohm (see below)
#10 AWG Maximum of 500’ (feet) Reference DS-9066
#12 AWG Maximum of 300’ (feet) Reference DS-9066
#14 AWG Maximum of 200’ (feet) Reference DS-9066